The HT647PL(B) from Watech Electronics is a RF Amplifier with Frequency 1.8 to 600 MHz, Gain 23.3 to 26.7 dB, Output Power 49.5 to 53.5 dBm, Output Power 89.1 to 223.8 W, P1dB 49.5 to 53.5 dBm. Tags: Flanged, Ceramic, Surface Mount, Power Amplifier. More details for HT647PL(B) can be seen below.